Structurally deficient

From: 2015 "Status of the Nation’s Highways, Bridges, and Transit: Conditions and Performance" report to Congress

Bridges are considered “structurally deficient” if (1) significant load-carrying elements are found to be in poor or worse-than-poor condition due to deterioration or damage, or (2) the adequacy of the waterway opening the bridge provides is determined to be insufficient to the point of causing intolerable traffic interruptions due to high water. That a bridge is structurally deficient does not mean it is unsafe.

Long Shoals Bridge (Bourbon County, Kansas)Built 1902 by the Midland Bridge Co.Bypassed through truss bridge over Little Osage River on 265th StreetClosed to all traffic

Long Tom River Bridge (Benton County, Oregon)Built 1961Timber stringer bridge over Long Tom River on Hubbard RoadIntact but closed to all traffic

Lovers Lane Road Bridge (Miami County, Indiana)Built 1935, Replaced either 2007 or 2008 with Box Beam design. This bridge really added to the scenery of the area, but wasn't in great shape when I last crossed it in about 2003.Concrete arch bridge over a branch of Prairie Ditch on Lovers Lane RoadReplaced

Lovett Bridge (Worcester County, Massachusetts)Built 1908; Replaced 1995Lost Steel stringer bridge over Mumford River on Cook StreetReplaced by a new bridge

Lower San Rafael Bridge (Emery County, Utah)Originally built in the 1940s, Relocated to this location in 1973, Replaced 1998Lost Pony truss bridge over San Rafael River on County Road 1010Replaced by new bridge

Madison-Milton Bridge (Jefferson County, Indiana)Built 1928-29; rehabilitated 1997, imploded August 2013Cantilevered through truss bridge over Ohio River on US 421 between Madison, IN, and Milton, KYAll main spans demolished.

Maestri Bridge (Orleans Parish, Louisiana)Built 1928Bascule bridge over Lake Pontchartrain on US 11 in New OrleansOpen to traffic

Maggodee Creek Bridge (Franklin County, Virginia)Built 1929; Replaced in 2012 and storedPony truss bridge over Maggodee Creek on Alean RoadReplaced with a new truss bridge and moved to a nearby location

Mahanoy Creek Bridge (Northumberland County, Pennsylvania)Built 1902 by the King Bridge CompanyThrough truss bridge over Mahanoy Creek on TR 377Closed to all traffic